Sen. Marco Rubio (R-Fla.) is not ruling out the possibility that President Trump may have attempted to obstruct justice in his interactions with former FBI Director James Comey.

“I’m not prepared to reach a conclusion on that, because we’re not done with all the other pieces that are missing,” Rubio said, according to The Washington Post.

Rubio's comments followed Comey's high-profile testimony on Thursday before the Senate Intelligence Committee, of which Rubio is member. In the session, Comey told lawmakers that before he was fired Trump had demanded his loyalty and pressed him to drop the FBI's probe into former national security adviser Michael Flynn.

“I don’t think anybody would leave this hearing and say to you that what the president said in the Oval Office on the 14th of February was appropriate,” Rubio said, referring to the meeting in which Trump reportedly asked Comey to end the Flynn investigation.